MINERAL NITROGEN SOURCES (N-NO3- AND N-NH4+) ON GROWTH OF GRÁPIA (Apuleia leiocarpa (Vog.) Macbride) SEEDLINGS
DOI:
https://doi.org/10.5902/198050981839Keywords:
forest specie, Leguminosae, mineral nutrition, soil pHAbstract
Grápia (Apuleia leiocarpa (Vog.) Macbride) is an important native forest species that has been in extinction process. The aim of this study was to evaluate the effect of mineral nitrogen source on growth of grápia seedlings. Five variations in the concentration of N-NO3- and N-NH4+ (5:0, 4:1, 2,5:2,5, 1:4, and 0:5 mM of N) were tested in an entirely random statistical design with 16 replicates. The experimental unity consisted of a vessel containing 3,0 kg of a Paleudalf soil and two plants, under glasshouse conditions. From 60 to 150 days after fertilization (DAF), the plant growth and soil pH were monthly analyzed from four replicates randomly taken. Independently of the nitrogen source used, the soil pH decreased, and on 150 DAF the smallest pH variation was 0.33 and the largest one was 0.47 pH units, respectively, on treatments with 5 N-NO3-:0 N-NH4+ and 0 N-NO3-:5 N-NH4+ ratios. The presence of N-NH4+, from 1 to 5 mM, induced necrosis in old leaves and their ulterior abscission. To 150 DAF, in the presence of 5 mM N-NH4+, the plant survival was reduced to 31%. The effect of nitrogen sources on plant growth appeared to be depended on plant age and/or of their transformations in the soil. To 120 DAF, the presence of N-NH4+ from 2,5 to 5 mM reduced the number of stalk nodes, plant height, stem diameter, dry weight of leaves, of stem, of roots, and of the whole plant. However, to 150 DAF, because of the regain on the growth rate, these differences were not observed, with exception of the root/shoot dry weight ratio that was reduced on the exclusive presence of N-NH4+. The suitable N-NO3-:N-NH4+ ratio in the fertilization to grow grápia seedlings, can not exceed, respectively, 4:1.
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References
ABBÈS, C.; PARENT, L.E.; KARAN, A. et al. Effect of NH4+:NO3- ratios on growth and nitrogen uptake by onions. Plant and Soil, Netherlands, v. 171, p. 289-296, 1995.
BRASIL. Levantamento de reconhecimento dos solos do Estado do Rio Grande do Sul. Recife: Ministério da Agricultura – Departamento Nacional de Pesquisa Agropecuária – Divisão de Pesquisas Pedológicas, 1973. 431p. (Boletim Técnico, 30).
CARVALHO, P.E.R. Espécies florestais brasileiras, recomendações silviculturais, potencialidades e uso da madeira. Brasília: EMBRAPA-CNPF/SPI, 1994. 640p.
CLAUSSEN, W.; LENS, F. Effect of ammonium and nitrate on net photosynthesis, flower formation, growth and yield of eggplants (Solanum melongena L.). Plant and Soil, Netherlands, v. 171, p. 267-274, 1995.
CRAWFORD, D.M.; CHALK P. M. Sources of N uptake by wheat (Triticum aestivum L.) and N transformation in soil treated with a nitrification inhibitor. Plant and Soil, Netherlands, v. 149, p. 59-72, 1993.
GRESPAN, S.L.; DIAS, L.E.; NOVAIS, R.F. Crescimento e parâmetros cinéticos de absorção de amônio e nitrato por mudas de Eucalyptus spp submetidas a diferentes relações amônio/nitrato na presença e ausência de fósforo. Revista Brasileira de Ciência do Solo, Campinas, v. 22, p. 667-674, 1998.
HE, Z.L.; ALVA, A.K.; CALVERT, D.V. et al. Effects of nitrogen fertilization of grapefruit trees on soil acidification and nutrient availability in a Riviera fine sand. Plant and Soil, Netherlands, v. 206, p. 11-19, 1999.
LOCATELLI, M. Efeito de formas, fontes e doses de nitrogênio sobre o crescimento e composição mineral de mudas de Eucalyptus grandis W. Hill (ex Maiden). 1984. 64p. Dissertação (Mestrado em Engenharia Florestal) –Universidade Federal de Viçosa, Viçosa, 1984.
MARSCHNER, H.; HAUSSLING,M.; GEORGE, E. Ammonium and nitrate uptake rates and rhizosphere-pH in non-mycorrhizal roots of Norway spruce (Picea abies (L.) Karst.). Trees, Berlin, v. 5, p. 14-21, 1991.
MATTOS, N.F.; GUARANHA, J. Contribuição ao estudo da grápia (Apuleia leiocarpa). Porto Alegre: Instituto de Pesquisas de Recursos Naturais Renováveis “AP”, 1983. 25p. (Boletim Técnico, 12).
MEHNE-JAKOBS, B.; GULPEN, M. Influences of different nitrate to ammonium ratio on chlorosis, cation concentration and binding forms of Mg and Ca in needles of Mg-deficient Norway spruce. Plant and Soil, Netherlands, v. 188, p. 267-277, 1997.
NEILSEN, G.H.; PARACHOMCHUK, P.; HOGUE, E.J. et al. Response of apple-trees to fertilization-induced soil acidification. Canadian Journal of Plant Science, Ottawa, v. 74, p. 347-351, 1994.
NICOLOSO, F.T.; GARLET, A.; ZANCHETTI, F. et al. Efeito de métodos de escarificação na superação da dormência de sementes e dois substratos na germinação e no desenvolvimento da grápia (Apuleia leiocarpa). Ciência Rural, Santa Maria, v. 27, p. 419-424,1997.
NICOLOSO, F.T.; ZANCHETTI, F.; GARLET, A. et al. Exigências nutricionais da grápia (Apuleia leiocarpa (Vog.) Macbride) em solo podzólico vermelho amarelo. Ciência Rural, Santa Maria, v. 29, n. 2, p. 225-231,1999.
NICOLOSO, F.T.; SARTORI, L.; JUCOSKI, G.O. et al. Variações da fonte de nitrogênio mineral (NO3- e NH4+) no crescimento da canafístula (Peltophorum dubium (Sprengel) Taubert). In: CONGRESSO NACIONAL DE BOTÂNICA, 51., 2000, Brasília, DF. Anais... Brasília: SBB, 2000. p. 37.
NICOLOSO, F.T.; FOGAÇA, M.A. de F.; ZANCHETTI, F. et al. Nutrição mineral de mudas de grápia (Apuleia leiocarpa) em argissolo vermelho distrôfico arênico: (I) efeito da adubação NPK no crescimento. Ciência Rural, Santa Maria, v. 31, n. 6, p. 991-998, 2001.
NOVAIS, R.F.; BARROS, N.F.; NEVES, J.C.L. Nutrição mineral do Eucalipto. In: BARROS, N.F.; NOVAIS, R.F. Relação solo-eucalipto. Viçosa: Folha de Viçosa, 1990. cap. 2, p. 25-98.
PEARSON, J.; STEWART, G.R. The deposition of atmospheric ammonia and its effects on plants. New Phytologist, Cambridge, v. 125, p. 283-305. 1993.
PEREIRA, E.G.; SANTOS, D.R. dos; LIMA, A.S. et al. Relação nitrato (N-NO3-) amônio N-NH4+) em couvilea (Colvillea racemosa). In: REUNIÃO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRIÇÃO DE PLANTAS, 23., 1998. Caxambu, MG. Resumos... Lavras: UFLA/SBCS/SBM, 1998. p. 330.
REITZ, R., KLEIN, R.M.; REIS, A. Projeto madeira do Rio Grande do Sul. Porto Alegre: Corag, 1988. 525p.
SERNA, M.D.; BORRAS, R.; LEGAZ, F. et al. The influence of nitrogen concentration and ammonium/nitrate ratio on N-uptake, mineral composition and yield of Citrus. Plant and Soil, Netherlands, v. 147, p. 13-23, 1992.
SCHUBERT, S.; YAN, F. Nitrate and ammonium nutrition of plants: effects on acid/base balance and adaptation of root cell plasmalemma H+ ATPase. Zeitschrift fuer Pflanzenernaehrung und Bodenkunde, Weinheim, v. 160, p. 275-281, 1997.
SCHUBERT, S.; SCHUBERT, E.; MENGEL, K. Effect of low pH of the root medium on proton release, growth, and nutrient uptake of field beans (Vicia faba). Plant and Soil, Netherlands, v. 124, p. 239-244, 1990.
TENNANT, D.A. A test of a modified line intersect method of estimating root length. Journal of Ecology, Oxford, v. 63, n. 3, p. 995-1001, 1975.
